Alert archive / North Carolina / Frost Advisories in 2011
Frost Advisory 7, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this frost advisory at Oct 2, 2011, 1:52 PM EDT for 6 counties in North Carolina. It took effect at Oct 3, 2011, 12:00 AM EDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Oct 2, 2011, 1:52 PM EDT (17:52 UTC)
- In effect from
- Oct 3, 2011, 12:00 AM EDT
- Expired
- Oct 3, 2011, 10:00 AM EDT
- In force
- 10 hr
- Issued by
- NWS Greenville-Spartanburg, SC
Counties Graham County, NC, Haywood County, NC, Jackson County, NC, Macon County, NC, Swain County, NC, Transylvania County, NC
The radar
The Knoxville radar (KMRX), 93 km from the middle of the area, began a volume at 17:52 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.9 hours before the alert went out and 246 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 948 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
705 WWUS72 KGSP 021752 NPWGSP URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 152 PM EDT SUN OCT 2 2011 NCZ051-052-058-059-062>064-030400- /O.NEW.KGSP.FR.Y.0007.111003T0400Z-111003T1400Z/ SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON- TRANSYLVANIA- INCLUDING THE CITIES OF...BRYSON CITY...WAYNESVILLE...SYLVA... FRANKLIN...BREVARD 152 PM EDT SUN OCT 2 2011 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT MONDAY... THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT MONDAY. * LOCATIONS...SOUTHWESTERN NORTH CAROLINA MOUNTAINS. * TEMPERATURES...IN THE LOWER TO MIDDLE 30S. * IMPACTS...AREAS OF FROST EXPECTED...ESPECIALLY IN SHELTERED VALLEYS. SOME COLDER VALLEYS MAY EXPERIENCE A LIGHT FREEZE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ ARK
3 follow-up statements
802 WWUS72 KGSP 030221 NPWGSP URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1021 PM EDT SUN OCT 2 2011 NCZ051-052-058-059-062>064-031030- /O.CON.KGSP.FR.Y.0007.111003T0400Z-111003T1400Z/ SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON- TRANSYLVANIA- INCLUDING THE CITIES OF...BRYSON CITY...WAYNESVILLE...SYLVA... FRANKLIN...BREVARD 1021 PM EDT SUN OCT 2 2011 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT MONDAY... * LOCATIONS...SOUTHWESTERN NORTH CAROLINA MOUNTAINS. * TEMPERATURES...IN THE UPPER 30S. * IMPACTS...AREAS OF FROST EXPECTED...ESPECIALLY IN SHELTERED VALLEYS. SOME COLDER VALLEYS MAY EXPERIENCE A LIGHT FREEZE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
566 WWUS72 KGSP 030745 NPWGSP URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 345 AM EDT MON OCT 3 2011 NCZ051-052-058-059-062>064-031545- /O.NEW.KGSP.FR.Y.0008.111004T0400Z-111004T1300Z/ /O.CON.KGSP.FR.Y.0007.000000T0000Z-111003T1400Z/ SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON- TRANSYLVANIA- INCLUDING THE CITIES OF...BRYSON CITY...WAYNESVILLE...SYLVA... FRANKLIN...BREVARD 345 AM EDT MON OCT 3 2011 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT TUESDAY... THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT TUESDAY. A FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM THIS MORNING. * LOCATIONS...SOUTHWESTERN NORTH CAROLINA MOUNTAINS. * TEMPERATURES...IN THE LOWER TO MID 30S. * IMPACTS...AREAS OF FROST EXPECTED...ESPECIALLY IN SHELTERED VALLEYS. SOME COLDER VALLEYS MAY EXPERIENCE A LIGHT FREEZE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
039 WWUS72 KGSP 031405 NPWGSP URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1005 AM EDT MON OCT 3 2011 NCZ051-052-058-059-062>064-032200- /O.EXP.KGSP.FR.Y.0007.000000T0000Z-111003T1400Z/ /O.CON.KGSP.FR.Y.0008.111004T0400Z-111004T1300Z/ SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON- TRANSYLVANIA- INCLUDING THE CITIES OF...BRYSON CITY...WAYNESVILLE...SYLVA... FRANKLIN...BREVARD 1005 AM EDT MON OCT 3 2011 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT TUESDAY... * LOCATIONS...SOUTHWESTERN NORTH CAROLINA MOUNTAINS. * TEMPERATURES...OVERNIGHT LOWS IN THE LOWER TO MID 30S. * IMPACTS...AREAS OF FROST EXPECTED...ESPECIALLY IN SHELTERED VALLEYS. SOME COLDER VALLEYS MAY EXPERIENCE A LIGHT FREEZE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ HG
What forecasters said that day
The local office's own words before this frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this frost advisory went out at Oct 2, 1:47 PM EDT, 5 minutes earlier.
Area forecast discussion, Oct 2, 1:47 PM EDT, 5 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
147 PM EDT SUN OCT 2 2011
.SYNOPSIS...
COOL CANADIAN AIR WILL REMAIN OVER THE AREA THROUGH TONIGHT. SOME
SHOWERS WILL DEVELOP IN THE LINGERING MOISTURE ACROSS THE NORTHERN
PORTION OF THE AREA...WITH SNOW POSSIBLE OVER THE HIGHER ELEVATIONS.
DRY HIGH PRESSURE WILL BUILD INTO THE AREA THROUGH THE WEEK WITH
TEMPERATURES WARMING TO SEASONAL NORMALS BY THE MID WEEK.
&&
.NEAR TERM /THROUGH MONDAY/...
AS OF 1230 PM...A STACKED LOW PRESSURE SYSTEM WILL CONTINUE TO SPIN
OVER THE MID ATLANTIC STATES THRU MONDAY. MEANWHILE...SFC RIDGE
HAS SETTLED OVER THE MS RIVER VALLEY AND WILL BEGIN TO BUILD
EASTWARD. SO OVERALL...PRES GRAD HAS WEAKENED ACRS THE
CWFA...RESULTING IN LESS WINDS AND DRY CONDITIONS.
TONIGHT...FCST CHALLENGE IS FROST AND FREEZING TEMPS IN THE NC
MTNS...AS VALLEYS LIKELY WILL DECOUPLE AND THICKNESSES SUPPORT TEMPS
DROPPING INTO THE LWR-MID 30S. THE FRENCH BROAD VALLEY AND NRN NC
MTNS LOOK TO REMAIN SOMEWHAT MIXED...AND MAY EXPERIENCE SOME
LINGERING CLOUD COVER OVERNIGHT...WHILE THE SW MTNS SHUD BE
GENERALLY CALM AND CLEAR. SO WILL ISSUE A FROST ADV WITH THIS UPDATE
FOR THE SW NC MTNS. THE REST OF THE MTNS MAY EXPERIENCE PATCHY FROST
AND/OR A LIGHT FREEZE IN SPOTS...BUT NOT WIDESPREAD ENUF TO WARRANT
ANY HEADLINES. THERE IS A CHC THAT IF WINDS DECOUPLE MORE THAN
EXPECTED...THAT MORE WIDESPREAD FREEZING TEMPS MAY OCCUR IN THE NRN
MTNS. OUTSIDE THE MTNS...PATCHY FROST MAY OCCUR IN THE TYPICALLY
COLDEST LOCATIONS.
MONDAY...A PLEASANT DAY ON TAP...AS HIGH PRES BUILDS IN. STILL
COULD BE SOME LINGERING CLOUDINESS ALONG I-40 CORRIDOR...BUT
OTHERWISE SUNNY...WITH TEMPS REBOUNDING A CATEGORY OR TWO FROM
SUNDAY/S READINGS.
&&
.SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY/...
AS OF 330 AM SUNDAY...UPPER LOW PULLS AWAY FROM THE AREA MONDAY BUT
NOT BEFORE ANOTHER SHORT WAVE ROTATES ACROSS THE AREA. BEST MOISTURE
AND FORCING WILL BE NORTH OF THE AREA...BUT SHOULD BE ENUF FOR
INCREASED CLOUDS ACROSS NC DURING THE DAY. TEMPS WILL BE TRICKY AS
THICKNESSES AND H85 TEMPS RISE SIGNIFICANTLY BUT CLOUDS LINGER THRU
THE DAY ACROSS THE NORTH. THEREFORE...ALLOWED TEMPS TO RISE NEAR MOS
LEVELS BUT BACKED OFF A COUPLE OF DEGREES. THIS KEEPS TEMPS AS MUCH
AS 10 DEGREES BELOW NORMAL. CLOUDS DIMINISH MON NITE AND WINDS
BECOME LIGHT EXCEPT OVER THE RIDGES. STILL...LOWS DO NOT BOTTOM OUT
GIVEN INCREASING THICKNESSES. LOWS WILL BE 5 TO 10 DEGREES BELOW
NORMAL ACROSS THE AREA. VALLEYS WILL BE COLDER THAN RIDGES...AND
FROST COULD DEVELOP IN SHELTERED VALLEYS.
UPPER LOW CONTINUES TO PULL AWAY FROM THE AREA THRU THE PERIOD WITH
DIMINISHING NWLY FLOW AS UPPER RIDGE BUILDING OVER THE CENTRAL CONUS
MOVES TOWARD THE AREA. RIDGE EXTENDING FROM SFC HIGH PRESSURE
CENTERED TO OUR NORTH SLIDES INTO THE ERN US. THIS WILL BRING MOSTLY
CLEAR SKIES AND STEADILY RISING THICKNESSES AND H85 TEMPS. EXPECT
HIGHS TO RISE TO AROUND NORMAL BY WED WITH LOWS RISING A FEW DEGREES
TUE NITE.
&&
.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
AS OF 1210 PM SUNDAY...HPC CONTINUES TO FAVOR THE ECMWF FOR THE
EXTENDED RANGE. THE FORECAST WILL BE A DRY ONE...THAT MUCH IS FOR
SURE...AS A DEEP LAYER RIDE GRADUALLY MOVES INTO THE REGION FROM THE
WEST. HOWEVER...THE EASTERN CONUS TROUGH WILL BE SLOW TO MOVE AWAY
FROM THE REGION...WITH A COUPLE POTENT SHORT WAVES DIVING DOWN THE
BACK SIDE OF THE THE TROUGH THU AND FRI ALONG THE ATLANTIC COAST.
THIS WILL HELP TO REINFORCE SFC HIGH PRESSURE OVER THE REGION WITH A
COUPLE SURGES OF COOLER AND DRIER AIR EXPECTED TO FOLLOW EACH SHORT
WAVE PASSAGE. NONE OF THESE REINFORCING SHOTS OF HIGH PRESSURE LOOK
TO HAVE ANY CHARACTERISTICS THAT I WOULD CALL COLD AIR
DAMMING...WITH A SPRAWLING H8 RIDGE NW OF THE REGION THROUGH THE
PERIOD...AND WE SHOULD SEE SUNNY SKIES AND A LITTLE BELOW NORMAL
TEMPERATURES THROUGH SATURDAY. THE RIDGE WILL BEGIN TO MODIFY BY
SUNDAY. THERE COULD CERTAINLY BE SOME FIRE WEATHER CONCERNS WITH
THESE SHOTS OF COOL...DRY AIR...BUT DEWPOINT FORECAST ARE QUITE
TRICKY MORE THAN A DAY OR TWO OUT.
&&
.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
AT KCLT AND ELSEWHERE...NWLY WINDS WITH A FEW GUSTS TO CONTINUE THIS
AFTN...THEN DIMINISH AFTER/AROUND SUNSET. CLOUDINESS...PERHAPS
DIPPING BACK TOWARD MVFR IS EXPECTED TO SPREAD BACK INTO THE NC MTNS
TONIGHT. A FEW TO SCT STRATOCU WILL LINGER INTO MONDAY...MAINLY ACRS
THE NC TAF SITES. WIND STAY OUT THE NW ON MONDAY...BUT NOT AS GUSTY.
OUTLOOK....DRY HIGH PRESSURE WILL CONTINUE TO BUILD IN FROM THE WEST
EARLY NEXT WEEK...RESULTING IN DIMINISHING WINDS AND GENERALLY VFR
CONDITIONS THROUGH AT LEAST MID-WEEK.
AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE
PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE
CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)...
WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM
&&
.FIRE WEATHER...
MIN RH VALUES ARE EXPECTED TO BE IN THE 25 TO 30 PERCENT RANGE ACRS
NE GA AND THE UPSTATE THIS AFTN...WITH WINDS GENERALLY 10-15 MPH. A
FIRE DANGER STATEMENT WILL CONTINUE FOR NE GA FOR THE AFTERNOON.
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...FROST ADVISORY FROM MIDNIGHT TONIGHT TO 10 AM EDT MONDAY FOR
NCZ051-052-058-059-062>064.
SC...NONE.
&&
SYNOPSIS...PAT
NEAR TERM...ARK
SHORT TERM...RWH
LONG TERM...MCAVOY
AVIATION...ARK
FIRE WEATHER...ARKHazardous weather outlook, Oct 2, 4:10 AM EDT, 9 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 410 AM EDT SUN OCT 2 2011 NCZ033-048>053-058-059-062>065-501-503-505-507-509-030900- AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM- NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON- CALDWELL MOUNTAINS-BURKE MOUNTAINS-MCDOWELL MOUNTAINS- RUTHERFORD MOUNTAINS-POLK MOUNTAINS- 410 AM EDT SUN OCT 2 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. LOW TEMPERATURES TONIGHT WILL FALL INTO THE MID 30S ACROSS MANY VALLEY LOCATIONS AND THE LOWER 30S AT THE HIGHER ELEVATIONS. FREEZING TEMPERATURES SHOULD MAINLY BE CONFINED TO THE HIGHER ELEVATIONS. HOWEVER...SOME OF THE SHELTERED VALLEYS COULD SEE POCKETS OF FROST AND FREEZING TEMPERATURES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. LOW TEMPERATURES MONDAY NIGHT WILL FALL INTO THE MID TO UPPER 30S IN THE VALLEYS WITH WARMER TEMPERATURES OVER THE HIGH ELEVATIONS. FROST MAY DEVELOP IN THE SHELTERED VALLEYS. .SPOTTER INFORMATION STATEMENT... NONE. GAZ010-030900- RABUN- 410 AM EDT SUN OCT 2 2011 ...FIRE DANGER STATEMENT IN EFFECT FROM NOON EDT TODAY THROUGH THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FIRE DANGER STATEMENT. LOW TEMPERATURES ARE EXPECTED TO DIP INTO THE MID TO UPPER 30S ACROSS MUCH OF RABUN COUNTY TONIGHT. SOME PATCHY FROST WILL BE POSSIBLE IN SHELTERED AREAS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. GAZ017-018-026-028-029-030900- HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT- 410 AM EDT SUN OCT 2 2011 ...FIRE DANGER STATEMENT IN EFFECT FROM NOON EDT TODAY THROUGH THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FIRE DANGER STATEMENT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. NCZ035>037-056-057-068>072-082-502-504-506-508-510-SCZ001>014-019- 030900- ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON- MECKLENBURG-CABARRUS-UNION NC-GREATER CALDWELL-GREATER BURKE- EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK-OCONEE MOUNTAINS- PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK- ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 410 AM EDT SUN OCT 2 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
Nearby
Frost Advisories in North Carolina, 2011Every frost advisory in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.